Respiratory & Circulatory System Quiz

What is function of the dome-shaped diaphragm muscle?

• This is where gas exchange happens.

• Air passes through the diaphragm on the way to the lungs.

• It attaches to the lungs and contracts and relaxes to help in breathing.

The air sacs that are covered with capillaries where gas exchange takes place

• bronchi
• lungs
• oxygen
• alveoli

Tags

NGSS.HS-LS2-3

These blood cells are the protectors and help fight off disease.

• Red blood cells
• White blood cells
• Plasma
• Platelets 

Tags

NGSS.MS-LS1-3

Blood has how many parts?

• 1
• 2
• 3
• 4

_______ is made mostly of water and makes up about 55% of the blood

• Plasma
• Platelets 
• Red blood cells
• White blood cells

What part of blood is responsible for carrying wastes, nutrients, and minerals?

• Red Blood Cells
• White Blood Cells
• Platelets
• Plasma

What part of blood is responsible for fighting infections?

• Red Blood Cells
• White Blood Cells
• Platelets
• Plasma

The thickest and strongest blood vessel is the

• vein

• artery

• capillary

• both veins and capillaries

Valves in veins

• support them

• protect them

• prevent the backward movement inside them

• provide them elesticity

These are one cell thick

• arteries

• capillaries

• veins